Global `before` and `beforeEach` for mocha?

Question

I\'m using mocha for javascript unit-testing now.

I have several test files, each file has a before and beforeEach, but they are exactly the s

Answer 1

The use of a modules can make it easier to have a global setup/teardown for your test suite. Here is an example using RequireJS (AMD modules):

First, let's define a test environment with our global setup/teardown:

// test-env.js

define('test-env', [], function() {
  // One can store globals, which will be available within the
  // whole test suite.
  var my_global = true;

  before(function() {
    // global setup
  });
  return after(function() {
    // global teardown
  });
});

In our JS runner (included in mocha's HTML runner, along the other libs and test files, as a , or better, as an external JS file):

require([
          // this is the important thing: require the test-env dependency first
          'test-env',

          // then, require the specs
          'some-test-file'
        ], function() {

  mocha.run();
});

some-test-file.js could be implemented like this:

// some-test-file.js

define(['unit-under-test'], function(UnitUnderTest) {
  return describe('Some unit under test', function() {
    before(function() {
      // locally "global" setup
    });

    beforeEach(function() {
    });

    afterEach(function() {
    });

    after(function() {
      // locally "global" teardown
    });

    it('exists', function() {
      // let's specify the unit under test
    });
  });
});